Sylvester Stallone is the Beverly Hills Cop. . .

Or at least he could have been, and it would have been a very different movie.  Just as different as if Gizmo was a homicidal monster or E.T. had a thing against cows or if there was no Luke Skywalker or John McClane.  If many famous movies stuck to their original idea than we'd have some very different pop culture references.  Over at the Collective Publishing, I look at 10 films that had the chance to be very different from what turned out to be the finished product.